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What Are The Commonly Used Types Of Capillary Columns?

Answer»

Capillary columns are GENERALLY 10 – 100M long TUBES having an internal diameter ranging from 0.1 – 0.5mm made of flexible material such as fused silica. Common types of capillary columns are

  • Wall COATED open tubular (WCOT) – Internal wall is coated with a very fine film of adsorbing liquid 
  • Surface coated open tubular (SCOT) – Inner wall is lined with a layer of SOLID support on to which the liquid phase is absorbed. 

The columns are flexible and wound into several turn coils supported on a SS cage inside the column oven

Capillary columns are generally 10 – 100m long tubes having an internal diameter ranging from 0.1 – 0.5mm made of flexible material such as fused silica. Common types of capillary columns are

The columns are flexible and wound into several turn coils supported on a SS cage inside the column oven


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